Athlete Health Intelligence

Your body produces
clinical data
every heartbeat.
We read it.

Two tools. One mission. Know your body with the precision of a sports science lab — no new hardware, no subscription, no cloud.

MettleSense Shield — Cardiac Screening MettleSense Lean — Body Intelligence

9 arrhythmia conditions 5 HRV metrics ICD-10 on every alert 200+ athlete sessions IFCT 2017 + USDA FoodData PubMed citations Zero cloud. Zero subscription. Pan-Tompkins signal processing Sugar Bomb™ weight intelligence Garmin-native zones 9 arrhythmia conditions 5 HRV metrics ICD-10 on every alert 200+ athlete sessions IFCT 2017 + USDA FoodData PubMed citations Zero cloud. Zero subscription. Pan-Tompkins signal processing Sugar Bomb™ weight intelligence Garmin-native zones

Built for athletes who want answers, not averages.

Consumer wearables give you a number. We give you a verdict.

MettleSense runs the algorithms cardiologists use to classify arrhythmias — and the body-science models used by sports physiologists to explain why your scale lied to you this morning. Tested on 200+ athlete sessions. Cited from PubMed. Runs entirely in your browser.

Three products

Clinical precision.
Zero new hardware.

Shield

1-Lead ECG Cardiac Screening Shield dashboard — Recovery 93/100, 9-condition cardiac clearance

Upload a Polar H10 or Apple Watch ECG. Get a 9-condition clinical arrhythmia verdict, ICD-10 coded, with dual-source confirmation. In seconds.

Explore Shield

Lean

Athlete Body Intelligence Lean dashboard — weight projection and retention intelligence

Type what you ate. Get macros, retention flags, Sugar Bomb™ alerts, and a citation-grade explanation of every weight fluctuation — with the exact date it resolves.

Explore Lean

बालमुकुंद

Balmukund

Autonomous Executive AI Balmukund morning digest dashboard — actions, bills, and spend tracking

A background AI executive assistant that runs on a schedule. Processes emails, logs events, tracks bills, and outputs one single morning digest. Process everything without you.

Explore Balmukund

Why MettleSense

No compromises.

No new hardware.

Works with the Polar H10 and Apple Watch you already own. Upload the PDF. Done.

No subscriptions.

Single-file HTML. Runs in your browser. Your data never leaves your device.

No guesswork.

Every verdict — cardiac or nutritional — is traceable to a peer-reviewed source. We show the citation. You verify the science.

Built for athletes.

Bradycardia at 38 bpm is normal for a trained runner. A 0.8 kg scale spike after a hard session is glycogen, not fat. We know the difference.

Your body producesclinical dataevery heartbeat.We read it.